UM
Nitrogen-doped and Fe-filled CNTs/NiCo2O4 porous sponge with tunable microwave absorption performance
Hu,Qingmei1; Yang,Rongliang1; Mo,Zichao1; Lu,Dongwei1; Yang,Leilei1; He,Zhongfu1; Zhu,Hai2; Tang,Zikang3; Gui,Xuchun1
2019-11-01
Source PublicationCarbon
ISSN0008-6223
Volume153Pages:737-744
AbstractLightweight, highly efficient, thermal stable microwave absorption materials are highly desirable but challenging for electromagnetic protection. Impedance matching and electromagnetic loss are two crucial factors for the microwave absorption materials design. Here, we successfully designed and synthesized a lightweight (31.5 mg/cm) and porous NiCoO@carbon nanotubes (CNTs) hybrid sponge (NiCoO@CNTs) based on N-doped and Fe-filled CNTs. The as-prepared NiCoO@CNTs shows high thermal stability (>500 °C) and excellent microwave absorption properties with a minimum reflection loss value of - 45.1 dB at 9.0 GHz for absorber thickness of 2.5 mm. Moreover, the maximum absorption peak frequency and effective microwave absorption region (<10 dB) can be controlled in the range of 4.0–16.0 GHz by varying the thickness of the absorber. The highly efficient electromagnetic absorption performance of the sponge is mainly attributed to the high dipolar polarization, interfacial polarization loss and suitable impedance matching characteristic. These results indicate that the NiCoO@CNTs sponge can serve as the lightweight, highly efficient, and high temperature resistant microwave absorption materials.
KeywordCNTs Dielectric loss Microwave absorption NiCo2O4
DOI10.1016/j.carbon.2019.07.077
URLView the original
Language英语
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Cited Times [WOS]:50   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorGui,Xuchun
Affiliation1.State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou,510275,China
2.State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-Sen University,Guangzhou,510275,China
3.Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade,Taipa,China
Recommended Citation
GB/T 7714
Hu,Qingmei,Yang,Rongliang,Mo,Zichao,et al. Nitrogen-doped and Fe-filled CNTs/NiCo2O4 porous sponge with tunable microwave absorption performance[J]. Carbon,2019,153:737-744.
APA Hu,Qingmei,Yang,Rongliang,Mo,Zichao,Lu,Dongwei,Yang,Leilei,He,Zhongfu,Zhu,Hai,Tang,Zikang,&Gui,Xuchun.(2019).Nitrogen-doped and Fe-filled CNTs/NiCo2O4 porous sponge with tunable microwave absorption performance.Carbon,153,737-744.
MLA Hu,Qingmei,et al."Nitrogen-doped and Fe-filled CNTs/NiCo2O4 porous sponge with tunable microwave absorption performance".Carbon 153(2019):737-744.
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